For the following script, I can disable lines 2 onwards but the first line is only disabled after it is committed I can't see where I am going wrong

/**

* @NApiVersion 2.x

* @NScriptType ClientScript

*/

define(['N/currentRecord'], function (currentRecord) {

function fieldChanged(context) {

var currentRecordObj = currentRecord.get();

var sublistId = context.sublistId;

var fieldId = context.fieldId;

log.debug({

title: 'Sublist ID',

details: sublistId

});

log.debug({

title: 'Field ID',

details: fieldId

});

var lineNumber=currentRecordObj.getCurrentSublistIndex({

sublistId: 'item'

})

log.debug('lineNumber',lineNumber)

var lineItem = currentRecordObj.getCurrentSublistValue({

sublistId: 'item',

fieldId: 'item'

});

// Check if the sublist is "item" and the field changed is "item"

if (sublistId === 'item' && lineNumber !== -1) {

log.debug({

title: 'Line',

details: lineNumber

});

var item = currentRecordObj.getCurrentSublistValue({

sublistId: 'item',

fieldId: fieldId

});

log.debug({

title: 'Item',

details: item

});

// Check if an item is selected in the line

if (item) {

currentRecordObj.getCurrentSublistValue({

sublistId:'item',

fieldId:'price'

}).isDisabled=true

log.debug('disabledField','disabled field with getcurrentsublistvalue')

// Disable the "rate" field for the selected line

currentRecordObj.setCurrentSublistValue({

sublistId: 'item',

fieldId: 'rate',

line: lineNumber,

value:'',

ignoreFieldChange: true

}).isDisabled=true;

log.debug('Rate field disabled for line ' + lineNumber);

} else {

// Enable the "rate" field for the selected line

currentRecordObj.setCurrentSublistValue({

sublistId: 'item',

fieldId: 'rate',

line:lineNumber,

value:'',

ignoreFieldChange: true

}).isDisabled=true

log.debug('Rate field enabled for line ' + lineNumber);

}

}

}

return {

fieldChanged: fieldChanged

};

});

your code shouldnt disable fields at all, there is no usage of Column.isDisabled nor Field.isDisabled